- Stage Names: Lina, Shang Mei LINA, Sung Mi LINA
- Former Stage Name: Jiyeon (지연)
- Birth Name: Lee Ji Yeon (이지연)
- Birthdate: February 18, 1984
- Height: 168cm
- Blood Type: A
- Education: Myung Ji Jun Moon University, Practical music major
- Religion: Christianity
- Hobbies: Drawing, Listening to music
- Favorite Artists: Christina Aguilera, Mariah Carey, Linkin Park
In 2000, Jiyeon auditioned for SM Entertainment through the Starlight Casting System. Singing S.E.S's "Shalala" and Christina Aguilera's "Genie in a Bottle" and dancing, her vocal talent and charismatic performance helped her to stand out, and she went on to win the audition.
In 2002, she debuted in the first female duo from SM Entertainment, Isak N Jiyeon. Unfortunately, during this time period, many of SM's artists were not promoted well and the group only met with moderate success. While Isak started to fade from the spotlight, Jiyeon did some music video work and maintained a steady presence in SM Town's seasonal albums. On the album 2004 Summer Vacation in SMTOWN.com, Jiyeon participated in a song alongside soloist Dana and the then-newcomers Sunday and Stephanie. This same foursome would go on to become the group Chun Sang Ji Hee The Grace.
In 2005, Jiyeon re-debuted with Chun Sang Ji Hee The Grace using her new stage name of Lina. In order to contribute to the group's international goals, Lina studied Chinese.
- [2003.06.02] 2003 Summer Vacation in SMTOWN.com (#2 Paradise (SM Town), #10 Geurimeuro Tteonaneun Yeohaeng (SM Town), #16 (Streaming TRAX) All my true love (SM Town))
- [2003.12.05] 2003 Winter Vacation in SMTOWN.com (#7 I Dream of You)
- [2003.10] S - I Swear
- [2004.11] Fly to the Sky - Geudaeneun Moreujyo (good-bye)
- [2006.05] KANGTA & VANNESS - SCANDAL
- [2006.07] TRAX - Chou (Cold Rain)